Python图形界面Tk

最近在学习Python，在使用Tkinter做图形界面时遇到了几个小问题，网上查了一下，在Python2.x导入的是Tkinter，Python3则是tkinter。而且导入的simpledialog和message也不一样。具体是这样的:Python2.x

from Tkinter import *
import tkSimpleDialog as dl
import tkMessageBox as mb

Python3

from tkinter import *
import tkinter.simpledialog as dl
import tkinter.messagebox as mb

一个猜数字的小游戏

#Python 2.7
from Tkinter import *
import tkSimpleDialog as dl
import tkMessageBox as mb
root=Tk()
w=Label(root,text='Guess Number Game')
w.pack()
mb.showinfo('Welcome','Welcome to Guess Number Game')
number=66
while True:
    guess=dl.askinteger('Number','what\'s your guess?')
    if guess==number:
        output='Bingo!you guessed it right,but you do not win any prizes!'
        mb.showinfo('hahah',output)
        break
    elif guess>number:
        output='No,the number is a lower than that'
        mb.showinfo('hahah',output)
    else:
        output='No,the number is a higher than that'
        mb.showinfo('hahah',output)
print 'Done'